Xantrex Technology Power Supply APG HPD User Manual

APG-XT  
APG-HPD  
Operating Manual  
Internal APG (Analog  
Programming) Interface  
for XT/HPD Series  
Programmable DC  
Power Supply  
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Operating Manual for  
Internal APG (Analog  
Programming) Interface  
for XT 60 Watt and  
HPD 300 Watt Series  
Programmable DC  
Power Supply  
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Limited What does this warranty cover and how long does it last?  
Warranty  
This Limited Warranty is provided by Xantrex Technology, Inc. (“Xantrex”) and  
covers defects in workmanship and materials in your Internal APG Interface card.  
This warranty lasts for a Warranty Period of 5 years from the date of purchase at  
point of sale to you, the original end user customer.  
What will Xantrex do?  
Xantrex will, at its option, repair or replace the defective product free of charge,  
provided that you notify Xantrex of the product defect within the Warranty Period,  
and provided that Xantrex through inspection establishes the existence of such a  
defect and that it is covered by this Limited Warranty.  
Xantrex will, at its option, use new and/or reconditioned parts in performing  
warranty repair and building replacement products. Xantrex reserves the right to use  
parts or products of original or improved design in the repair or replacement. If  
Xantrex repairs or replaces a product, its warranty continues for the remaining  
portion of the original Warranty Period or 90 days from the date of the return  
shipment to the customer, whichever is greater. All replaced products and all parts  
removed from repaired products become the property of Xantrex.  
Xantrex covers both parts and labor necessary to repair the product, and return  
shipment to the customer via a Xantrex-selected non-expedited surface freight  
within the contiguous United States and Canada. Alaska and Hawaii are excluded.  
Contact Xantrex Customer Service for details on freight policy for return shipments  
outside of the contiguous United States and Canada.  
How do you get service?  
If your product requires troubleshooting or warranty service, contact your merchant.  
If you are unable to contact your merchant, or the merchant is unable to provide  
service, contact Xantrex directly at:  
Phone:  
604 422 8595  
Toll Free North America:  
1 800 667 8422  
604 421 3056  
Fax:  
Email:  
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Direct returns may be performed according to the Xantrex Return Material  
Authorization Policy described in your product manual. For some products, Xantrex  
maintains a network of regional Authorized Service Centers. Call Xantrex or check  
our website to see if your product can be repaired at one of these facilities.  
In any warranty claim, dated proof of purchase must accompany the product and the  
product must not have been disassembled or modified without prior written  
authorization by Xantrex.  
Proof of purchase may be in any one of the following forms:  
The dated purchase receipt from the original purchase of the product at point of  
sale to the end user, or  
The dated dealer invoice or purchase receipt showing original equipment  
manufacturer (OEM) status, or  
The dated invoice or purchase receipt showing the product exchanged under  
warranty  
What does this warranty not cover?  
This Limited Warranty does not cover normal wear and tear of the product or costs  
related to the removal, installation, or troubleshooting of the customer’s electrical  
systems. This warranty does not apply to and Xantrex will not be responsible for any  
defect in or damage to:  
a. the product if it has been misused, neglected, improperly installed, physically  
damaged or altered, either internally or externally, or damaged from improper  
use or use in an unsuitable environment;  
b. the product if it has been subjected to fire, water, generalized corrosion,  
biological infestations, and high input voltage from lightning strikes;  
c. the product if repairs have been done to it other than by Xantrex or its authorized  
service centers (hereafter “ASCs”);  
d. the product if it is used as a component part of a product expressly warranted by  
another manufacturer;  
e. the product if its original identification (trade-mark, serial number) markings  
have been defaced, altered, or removed.  
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Disclaimer Product  
THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY PROVIDED  
BY XANTREX IN CONNECTION WITH YOUR XANTREX PRODUCT AND IS, WHERE  
PERMITTED BY LAW, IN LIEU OF ALL OTHER WARRANTIES, CONDITIONS,  
GUARANTEES, REPRESENTATIONS, OBLIGATIONS AND LIABILITIES, EXPRESS  
OR IMPLIED, STATUTORY OR OTHERWISE IN CONNECTION WITH THE  
PRODUCT, HOWEVER ARISING (WHETHER BY CONTRACT, TORT, NEGLIGENCE,  
PRINCIPLES OF MANUFACTURER’S LIABILITY, OPERATION OF LAW, CONDUCT,  
STATEMENT OR OTHERWISE), INCLUDING WITHOUT RESTRICTION ANY  
IMPLIED WARRANTY OR CONDITION OF QUALITY, MERCHANTABILITY OR  
FITNESS FOR A PARTICULAR PURPOSE. ANY IMPLIED WARRANTY OF  
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT  
REQUIRED UNDER APPLICABLE LAW TO APPLY TO THE PRODUCT SHALL BE  
LIMITED IN DURATION TO THE PERIOD STIPULATED UNDER THIS LIMITED  
WARRANTY.  
IN NO EVENT WILL XANTREX BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT,  
INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSSES, COSTS OR EXPENSES  
HOWEVER ARISING WHETHER IN CONTRACT OR TORT INCLUDING WITHOUT  
RESTRICTION ANY ECONOMIC LOSSES OF ANY KIND, ANY LOSS OR DAMAGE TO  
PROPERTY, ANY PERSONAL INJURY, ANY DAMAGE OR INJURY ARISING FROM OR  
AS A RESULT OF MISUSE OR ABUSE, OR THE INCORRECT INSTALLATION,  
INTEGRATION OR OPERATION OF THE PRODUCT.  
Exclusions If this product is a consumer product, federal law does not allow an exclusion of  
implied warranties. To the extent you are entitled to implied warranties under federal  
law, to the extent permitted by applicable law they are limited to the duration of this  
Limited Warranty. Some states and provinces do not allow limitations or exclusions  
on implied warranties or on the duration of an implied warranty or on the limitation  
or exclusion of incidental or consequential damages, so the above limitation(s) or  
exclusion(s) may not apply to you. This Limited Warranty gives you specific legal  
rights. You may have other rights which may vary from state to state or province to  
province.  
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Information WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, UNLESS  
SPECIFICALLY AGREED TO BY IT IN WRITING, XANTREX  
a. MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY  
OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN MANUALS OR  
OTHER DOCUMENTATION PROVIDED BY IT IN CONNECTION WITH THE  
PRODUCT; AND  
b. ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES,  
COSTS OR EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT,  
CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF  
SUCH INFORMATION.  
THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.  
WARNING: Please refer to your product user manual for limitations on uses of the product.  
Specifically, please note that this power supply is not intended for use in connection  
with life support systems and Xantrex makes no warranty or representation in  
connection with any use of the product for such purposes.  
Limitations  
on Use  
Xantrex Technology, Inc.  
8999 Nelson Way  
Burnaby, British Columbia  
Canada V5A 4B5  
Information Please record the following information when you first open your Power Supply  
package:  
About Your  
Power  
Model Number  
Serial Number  
Purchased From  
Purchase Date  
______________________________________________  
______________________________________________  
______________________________________________  
______________________________________________  
Supply  
Release Release 1.0 (2002-07)  
Copyright  
2002 Xantrex Technology Inc. All rights reserved.  
©
Printed in Canada  
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Warnings Warnings and cautions are defined and formatted in this manual as shown below.  
and  
Cautions  
WARNING  
Describes a potential hazard which could result in injury or death, or, a procedure  
which, if not performed correctly, could result in injury or death.  
CAUTION  
!
Describes a procedure which, if not performed correctly, could result in damage  
to data, equipment, or systems.  
Power  
Supply  
Safety  
WARNING—High Energy and High Voltage  
Exercise caution when using and calibrating a power supply. High energy levels  
can be stored at the output voltage terminals on a power supply in normal  
operation. In addition, potentially lethal voltages exist in the power circuit and on  
the output and sense connectors of a power supply with a rated output greater  
than 40 V. Filter capacitors store potentially dangerous energy for some time after  
power is removed.  
CAUTION  
!
Operate the power supply in an environment free of flammable gases or fumes. To  
ensure that the power supply’s safety features are not compromised, use the  
power supply as specified in this manual and do not substitute parts or make any  
unauthorized modifications. Contact the service technician for service and repair  
help. Repairs must be made by experienced service technicians only.  
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About This Manual  
This manual is for the internal APG (Analog Programming) interface card for the XT  
and HPD Series DC output power supplies. This manual provides you with  
descriptions and specifications, user options, and configuration instructions which  
enable you to manage the power supply from an external source.  
This manual is designed for the user who is familiar with basic electrical theory  
especially as it applies to the operation of power supplies. This implies a recognition  
of Constant Voltage and Constant Current operation modes and the control of input  
and output power, as well as the observance of safe techniques while effecting  
supply or pin connections and any changes in switch settings.  
Refer to your power supply manual for installation, configuration, and operating  
procedures for your power supply.  
Main Sections  
Section 1 Features and Specifications Describes the power supply and lists  
its features and specifications.  
Section 2 Installation and Configuration Goes through basic setup  
procedures. Describes inspection, and cleaning procedures. Includes additional  
options for calibration adjustment.  
Section 3 Operation Details information on remote programming, indicators  
and protections.  
Manual Revisions  
The current release of this manual is listed below. Updates may be issued as an  
addendum.  
Release 1.0 (2002-07)  
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About This Manual  
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About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii  
Section 1. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Specifications  
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Installation  
and  
Configuration  
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Front panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Operation  
Remote Programming Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
OVP Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
Setting the OVP Trip Level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
TTL Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
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Contents  
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Section 1. Features and Specifications  
Description  
The Analog Programming (APG) Interface is an internal option card for analog  
programming of XT and HPD Series DC power supplies with a 0-10Vdc  
programming source or a 0-10kresistance. A 25-pin female DSUB connector on  
the unit's rear panel enables connections to the card.  
Features  
Programming output voltage and/or current limit using a 0-10Vdc programming  
source or a 0-10kresistance. Externally adjustable offset and range.  
Fixed programming of output voltage and/or current limit using an available  
10V reference (10mA max source)  
0-10V readback of output voltage and current with externally adjustable offset  
and range  
Status signals for programming mode, operating mode, OVP (over voltage  
protection) flag, and output fail flag  
Adjustable OVP with reset and flag  
TTL shutdown with selectable positive or negative logic  
Tracking for multiple supplies of the same output  
Specifications  
Remote Analog Programming 0-10Vdc for 0-100% of rated voltage or current ±0.1%  
0-10kfor 0-100% of rated voltage or current ±0.1%  
OVP Trip Range  
Remote ON/OFF  
Tracking Accuracy  
3V to full output + 10%  
2 to 25Vdc high. <0.8Vdc low. User-selectable logic  
±1%  
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Section 1. Features and Specifications  
Specifications  
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Section 2. Installation and Configuration  
Introduction  
We usually install the APG interface in a power supply at the factory. Your local  
distributor or service center can also install the interface, especially for use in a  
previously-purchased supply already on site.  
Initial Inspection  
CAUTION  
!
If you remove the unit's cover, use proper static control techniques to avoid damage  
to static-sensitive components on the printed circuit board.  
On first receiving your unit, perform a quick physical check.  
Ensure each package contains a power supply with its APG interface board  
installed, and manuals for the power supply and the APG interface. Any  
additional parts shipped with the power supply will be identified in the supply's  
documentation.  
Inspect the unit for any signs of physical damage such as scratches, cracks, or  
broken switches, connectors, or displays.  
Check the printed circuit board and components if you suspect internal damage.  
If the unit is damaged, save all packing materials and notify the carrier immediately.  
For additional information, please see the section titled, “Returning Power Supplies  
to the Manufacturer” in the manual shipped with your complete unit.  
CAUTION  
!
Use proper static control techniques to avoid damage to static-sensitive components  
on the printed circuit board.  
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Section 2. Installation and Configuration  
Configuring  
Configuring  
Configure and adjust the analog programming interface installed in your XT or HPD  
DC power supply as indicated in this section. The front panel LEDs indicate when  
V or I programming is selected (PGM), when TTL shutdown has occurred (S/D), and  
when the supply exceeds the voltage trip point OVP). You can adjust the OVP right  
at the front panel. You will find the main programming option switch and connector  
on the unit's rear panel, see Figure 2.2.  
Front panel  
Figure 2.1 XT/HPD Front Panel with APG Interface Installed  
(typical configuration)  
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Section 2. Installation and Configuration  
Configuring  
Rear Panel  
Figure 2.2 XT/HPD Rear Panel with APG Interface  
Rear Panel Table 2.1 Rear Panel Switch S1 Default Settings  
Switch (S1)  
Defaults  
Setting Function  
S1-1  
TTL Shutdown Logic Select  
(OPEN=negative logic, CLOSED=positive logic)  
Resistive Current Program Select  
Remote Current Program Select  
Resistive Voltage Program Select  
Remote Voltage Program Select  
Tracking Select  
S1-2  
S1-3  
S1-4  
S1-5  
S1-6  
Default: Local control (all switches OPEN).  
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Section 2. Installation and Configuration  
Rear Panel J5 Connector  
Rear Panel J5 Connector  
Make analog interface connections via the rear panel 25-pin female DSUB connector  
designated J5. To provide the lowest noise performance, we recommend you use  
shielded-twisted pair wiring for making connections from external circuits to the J5  
connector. Use the shortest leads possible. Ground the shield to pin 6 (auxiliary  
ground) on the J5 connector or to the chassis via one of the J5 connector screws.  
Note:In order to maintain isolation of power supply output, any programming  
source must also be an isolated source.  
J5 Connector Table 2.2 J5 Connector Pin Assignments  
Pin  
Pin Function  
Assignments  
1
2
3
4
5
6
7
8
9
Over Voltage Protection Flag  
TTL Shutdown Return  
Not Used  
Program Return  
Program Return  
Auxiliary Ground  
Remote Voltage Program Select*  
Remote Current Program Select*  
Voltage/Current Limit Mode Indicator  
10 + OUT  
11 + OUT  
12 RTN  
13 RTN  
14 Not Used  
15 TTL Shutdown  
16 Current Limit Program  
17 Voltage Program  
18 Current Readback  
19 Voltage Readback  
20 +10 V Reference OUT (10 mA max.)  
21 Output Fail Flag*  
22 + SNS  
23 + OUT  
24 RTN  
25 RTN SNS  
* Negative Logic: LOW = ACTIVE  
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Section 2. Installation and Configuration  
Calibration Adjustment  
Calibration Adjustment  
You can access most calibration potentiometers through the top of the unit, see  
Figure 2.3. The exceptions are Voltage Program OFFSET and RANGE which are  
on the unit's rear panel which can be seen on Figure 2.2.  
Figure 2.3 APG Interface Calibration Adjustment Locations  
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Section 2. Installation and Configuration  
Calibration Adjustment  
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Section 3. Operation  
Remote Programming  
Remote programming allows control of the power supply's output voltage and/or  
current limit to shift from local operation at the front panel voltage and current  
controls to external analog input sources. As you vary the programming source, the  
power supply's output varies proportionally over its output range.  
When you select remote voltage programming, the voltage control knob on the front  
panel will not work. The same situation applies when you select remote current  
programming: the remote option overrides the current control knob on the front  
panel.  
CAUTION  
!
The programming signal return is internally referenced to the return sense (RTN  
SNS) potential of the power supply. Therefore, you may connect the remote  
programming source return to the power supply circuit at ONLY ONE of the  
following nodes:  
APG Interface J5 connector pins 4 or 5 (program return), OR  
power supply output return when remote sense not used, OR  
power supply return sense (RTN SNS) when remote sense is connected.  
If you do not observe this restriction, the power supply may operate erratically,  
or, fuse F1 on the APG Interface PCB assembly may blow.  
In order to maintain isolation of power supply output, use a programming source  
which is also an isolated source.  
Programming 1. Select remote voltage programming by moving the rear panel switch S1-5  
Output  
Voltage with  
a 0-10Vdc  
Voltage  
(remote voltage program select) to the ON (closed) position.  
Or, connect J5 pin 7 (remote voltage program select) to J5 pin 6 (auxiliary  
ground). As these two control functions are wired in parallel, they function as a  
logic OR.  
Source  
2. Connect the voltage source between pin 17 (voltage program) and either pin 4 or  
pin 5 (program return).  
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Section 3. Operation  
Remote Programming  
3. Vary the external voltage from 0-10Vdc to cause the power supply output to vary  
from 0-100% of rated output voltage. You may set the power supply's output  
current limit using another source or the front panel current limit control.  
Note:Access the zero offset adjustment through the rear panel hole labelled  
OFFSET. Access the full scale calibration adjustment through the rear panel hole  
labelled RANGE. See Figure 2.2, pg. 15.  
Programming 1. Select remote voltage programming by moving the rear panel switch S1-5  
Output  
Voltage with  
a 0-10k  
(remote voltage program select) to the ON (closed) position.  
Or, connect J5 pin 7 (remote voltage program select) to J5 pin 6 (auxiliary  
ground). As these two control functions are wired in parallel, they function as a  
logic OR.  
Resistance  
2. Set rear panel switch S1-4 (resistive voltage program select) to the ON (closed)  
position.  
3. Connect a variable resistor between pin 17 (voltage program) and either pin 4 or  
pin 5 (program return).  
4. Adjust the resistance from 0-10kto vary the power supply output from 0-100%  
of rated output voltage. You may set the power supply's output current limit  
using another source or the front panel current limit control.  
Programming 1. Select remote current limit programming by moving the rear panel switch S1-3  
Output  
Current with  
a 0-10 Vdc  
Voltage  
(remote current program select) to the ON (closed) position.  
Or, connect J5 pin 8 (remote current program select) to J5 pin 6 (auxiliary  
ground). As these two control functions are wired in parallel, they function as a  
logic OR.  
Source  
2. Connect the voltage source between J5 pin 16 (current program, positive) and  
either pin 4 or pin 5 (program return).  
3. Vary the external voltage from 0-10Vdc to cause the power supply current limit  
to vary from 0-100% of rated output. You may set the power supply's output  
voltage using another source or the front panel voltage control.  
Access the zero offset adjustment and full range scale adjustment through top cover  
slots as shown in Figure 2.3, pg. 17.  
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Section 3. Operation  
Remote Programming  
Programming 1. Select remote current programming by external resistance by moving the rear  
Output  
Current with  
a 0-10k  
panel switch S1-3 (remote current program select) to the ON (closed) position.  
Or, connect J5 pin 8 (remote current program select) to J5 pin 6 (auxiliary  
ground). As these two control functions are wired in parallel, they function as a  
logic OR.  
Resistance  
2. Set rear panel switch S1-2 (resistive current program select) to the ON (closed)  
position.  
3. Connect a variable resistance between J5 pin 16 and either pin 4 or pin 5  
(program return).  
4. Adjust the resistance from 0-10kto vary the power supply current limit from  
0-100% of rated output. You may set the power supply's output voltage using  
another source or the front panel voltage control.  
Programming The APG Interface J5 connector provides a +10 V reference output at pin 20 for  
applications which require a fixed output voltage and/or current limit. The current  
from this output must be less than 10 mA.  
with a Fixed  
+10V  
Reference  
To program output voltage:  
1. Connect resistor A between J5 connector pin 20 (+10 V reference out) and pin  
17 (voltage program).  
2. Connect resistor B between pin 17 (voltage program) and either pin 4 or 5  
(program return).  
To program current limit, follow the procedure used to set up for programming  
output voltage, substituting pin 16 (current program) for pin 17.  
VOMAX  
R
+10 V  
Vo = ------------B--  
RA + RB  
J5-20  
R
R
A
B
Vpgm  
Where:  
J5-17  
Vo = programmed output of power supply  
VoMAX = rated maximum output of power supply  
RA + RB > 1k  
J5-4  
Figure 3.1 Programming with a Fixed +10V Reference  
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Section 3. Operation  
Readback and Status Indicators  
Readback and Status Indicators  
Voltage and Voltage Readback  
Current  
Connect a meter between J5 connector pin 19 (voltage readback) and either pin  
4 or 5 (program return).  
Readback  
Range: 0-10V = 0-100% full rated voltage output of power supply  
Current Readback  
Connect a meter between J5 connector pin 18 (current readback) and either pin  
4 or 5 (program return).  
Range: 0-10V = 0-100% full rated current output of power supply  
Note:The voltage and current readback signals have adjustable offset and range.  
These adjustments are accessible from the top of the power supply (see Figure 2.3,  
pg. 17). The adjustments are independent of other power supply calibrations or  
adjustments such that APG readback can be zero and range calibrated without  
affecting other power supply parameters.  
Operating Connect voltmeter between J5 connector pin 9 (voltage/current limit mode  
indicator) and pin 6 (auxiliary ground).  
Mode Status  
Voltage Mode: active low open collector  
Current Mode: high impedance open collector  
Remote Remote programming status is available via J5 connector pins 7 (remote voltage  
program select) and 8 (remote current program select). Reference to J5 connector at  
either pin 4 or 5 (program return).  
Programming  
Status  
J5-7 LOW = Remote Voltage Program, HIGH=Local Front Panel Control  
J5-8 LOW = Remote Current Program, HIGH=Local Front Panel Control  
Output Fail The Output Fail Flag (J5 connector pin 21) signal is HIGH (open collector) when any  
one of the following conditions is true:  
Flag  
AC input to the power supply is below operating limits.  
Over voltage protection is activated.  
TTL shutdown is active.  
Sense line protect circuit is active (excessive load line drop or load line(s) not  
connected or fuse(s) in power supply blown).  
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Section 3. Operation  
Overvoltage Protection (OVP)  
Overvoltage Protection (OVP)  
The OVP circuit is designed to protect the load in the event of a remote programming  
error, incorrect voltage control adjustment, or power supply failure. The protection  
circuit monitors the output and reduces the output voltage and current to zero  
whenever a preset voltage limit is exceeded. A red LED on the front panel indicates  
when the OVP circuit has been activated. Set the OVP trip level at the front panel.  
OVP Flag When the OVP has been activated, a signal of nominal +10V through 10k will be  
present at pin J5-1. When no OVP condition exists, this signal will be 0V.  
Setting the 1. Turn the power supply OFF.  
OVP Trip  
2. Insert a small, flat-bladed screwdriver through the OVP ADJ (OVP Adjust) hole  
Level  
in the front panel to turn the adjusting screw fully clockwise (one-turn screw).  
3. Turn the unit ON and set the output to the desired trip voltage.  
4. Slowly turn the adjusting screw counterclockwise until the red OVP indicator  
lamp lights.  
5. Turn the POWER switch to OFF.  
6. Turn the voltage control knob to minimum.  
7. Turn the POWER switch back ON and increase the voltage to check that the  
power supply shuts off the output at the set voltage. Reference to J5 connector  
pin 6 (auxiliary ground).  
8. Reset the OVP circuit after activation by removing the overvoltage condition  
and powering the unit OFF and back ON, or, by momentarily activating the TTL  
remote shut down circuit. See “TTL Shutdown” for information about shut  
down circuit operation.  
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Section 3. Operation  
TTL Shutdown  
TTL Shutdown  
TTL Shutdown allows the output of the power supply to be disabled by a logic level  
signal. This input is optically isolated from the power supply output and will  
withstand a highpot test potential of 600Vac minimum. When TTL shutdown is  
activated, the front panel LED comes on.  
Connect the signal source between J5 connector pins 15 (TTL  
shutdown/positive) and 2 (TTL shutdown return/negative).  
Set rear panel switch S1-1 (TTL shutdown) to ON (closed) to obtain positive  
logic (high signal enables output). The factory-set default is switch OPEN for  
negative logic (high signal disables power supply output).  
Switch SW1-1 Setting  
TTL Signal Level  
Output Condition  
OPEN (Negative logic)  
HIGH  
LOW  
OFF  
ON  
CLOSED (Positive logic)  
HIGH  
LOW  
ON  
OFF  
Notes:Minimum activation signal required: 2V at 500µA  
Maximum activation signal allowed : 25Vdc  
24  
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Section 3. Operation  
Tracking  
Tracking  
For tracking +/- outputs, use the following set-up:  
Set slave unit rear panel switch S1-5 (remote voltage program select) and switch  
S1-6 (tracking select) to ON (closed).  
Connect master return (J5 connector pins 12, 13, or 24) to slave +OUT (J5  
connector pins 10, 11, or 23).  
Connect master +OUT (J5 connector pins 10, 11, or 23) to slave voltage program  
input (J5 connector pin 17).  
Notes:  
1. Master/slave power supplies must have the same output ratings.  
2. Set switch S2 on the slave unit's APG Interface PCB to the correct model  
number (factory preset). This requires that you remove the power supply cover.  
3. Slave tracking can be calibrated by adjusting the unit's offset and range  
potentiometers. See “Calibration Adjustment” on page 17.  
4. As the slave is referenced to the master's output, the noise and ripple on the slave  
may increase. In addition, if the master's output decreases due to current limit  
acting, the output voltage of the slave will follow.  
Figure 3.2 Master/Slave Tracking Configuration  
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Section 3. Operation  
Tracking  
26  
Operating Manual for APG for XT/HPD Series Power Supply  
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Xantrex Technology Inc.  
8999 Nelson Way  
Burnaby, British Columbia  
Canada V5A 4B5  
604 422 8595 Tel  
604 421 3056 Fax  
800 667 8422 Toll Free North America  
PRINTED IN CANADA  
TM-5A6H-01XN  
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